【美國大學生發綠豆芽】經驗、教訓和小竅門
文章來源: 彩煙遊士2022-02-12 06:34:59

綠豆芽好吃又好發,越來越受大家的歡迎。今天我向朋友們介紹我們春季種菜班是怎麽發綠豆芽的。成功的經驗和失敗的教訓一並奉上。

發豆芽的綠豆,最好是當年或者前一年的綠豆。時間放長了,綠豆的發芽率會降低。

在發綠豆芽之前,先將綠豆用溫水浸泡6-10個小時。水的溫度不能太高,否則會燙傷綠豆,影響發芽率。用手摸一下水,不燙手就可以。

我們種菜班用了三種不同的方法發綠豆芽。

第一, 用蒸籠。這是我們用的不鏽鋼蒸籠。在蒸籠上鋪紗布,噴一些水,將綠豆攤平,蓋好紗布,將紗布噴濕,再壓一個碟子。我們在蒸籠上套了一個紙箱子,盡量減弱光線。沒有光線發的綠豆芽潔白如玉,更好吃一些。

接下來的幾天,每天用自來水淋洗綠豆1-2次。這是過5-6天之後綠豆芽的樣子。

教訓#1:綠豆放得太多了。堆積在一起的綠豆不能散熱,有的豆子長了黴菌。不過,大部分綠豆芽還是可以吃的。

我們在蒸籠裏試發了第二次綠豆芽。這次的綠豆芽要好得多。學生們開心地收獲綠豆芽。

教訓#2: 發綠豆芽最好用廚房用的濕紙巾,不要用紗布。發過綠豆芽的紗布上長滿綠豆根,很難清洗幹淨。

教訓#3: 我們用的碟子太重,應該用輕一點的。用一塊輕塑料板可能更好。

第二,土培。兩個育苗托盤,一個有漏水孔,一個沒有漏水孔。在有漏水孔的托盤裏裝1/3潮濕的育苗土,整平。撒綠豆,蓋一層薄薄的育苗土,噴水。在接下來的幾天裏保持濕潤,不需要每天淋水。過了7天之後的綠豆芽。

這個方法發的綠豆芽似乎更粗壯一些,但與蒸籠發芽相比,沒有可圈的優點,因此建議不用營養土發綠豆芽。

第三,育苗托盤加濕巾紙。兩個育苗托盤,一個有漏水孔,一個沒有漏水孔。在育苗托盤上鋪幾層紙巾,將紙巾弄濕。鋪浸泡過的綠豆,薄薄的一層即可。蓋紙巾,噴水,將育苗托盤放在紙箱裏避光。接下來幾天需要每天淋洗綠豆1次。

5天之後的綠豆芽,又肥又壯。我覺得這是三種方法中最好的,最簡單。朋友們在育綠豆芽的時候可以參考。

有的學生用綠豆芽做的美食。喜歡種菜的人都是吃貨。

Mung bean sprouts taste great and are easy to grow. In this video, I will show you how our gardening class grew mung bean sprouts. Plus tips and lessons learned.

Use mung bean harvested from current or previous season. Mung bean stored for too long has low germination rate. Soak mung beans for 6-10 hours with lukewarm water. Be sure not to use hot water. Hot water will burn the beans and lower germination rate. How hot is too hot? It is too hot to mung beans if it is too hot for your hand.

We used three different ways to grow mung bean sprouts

1. Steamer.

This is my steamer I use for steaming glutinous rice for making rice wine at home. Spread cheesecloth. #50 is commonly used for growing microgreens. Wet the cheesecloth. Spread mung beans evenly on cheesecloth. Tuck in the cheesecloth snugly. Spray with water. Place a heavy plate to make sprouts grow stronger. The steamer was put under a box to reduce light level. Mung bean sprouts made in darkness look and taste better. Mung beans were rinsed 1-2 times a day.

This is what our mung bean sprouts look like in 5-6 days.

Lesson#1: My bad! I asked students to put in too much mung bean. There were some moldy mung beans because of overcrowding. Most sprouts were still good to eat.

We had a second try with only a thin layer of mung beans. The outcome was much better. Everybody got to take some sprouts home!

Lesson#2: Use paper towel instead of cheesecloth. It is hard to clean the roots off cheesecloth afterwards.

Lesson#3: The plate we used is a little too heavy and curvy.

2. Potting mix (Soil)

Two plastic trays. One with drainage holes and one without. Add some moist potting mix to the tray with drainage holes. Spread soaked mung bean. Cover mung beans with a thin layer of potting mix. Spray water to wet the potting mix. Keep the potting mix moist in the following days. No need to rinse.

These are mung bean sprouts in the tray in 7 days. These sprouts seemed thicker than those grown with the steamer method, but no real advantage over the steamer method. It is advised against using this method for growing mung bean sprouts.

3. Wet paper towel in trays

Two plastic trays. One with drainage holes and one without. Spray some paper towel. Wet the paper towel. Spread thin layer of soaked mung beans. Cover mung beans with more paper towel. Another round of spraying. Place trays in a box. No opening. No moving. Rinse mung beans with water daily. Mung bean sprouts were ready in 5 days!

Mung bean sprouts grown using this method are thick. This is the best of all three methods used in this class. It is therefore recommended for growing mung bean sprouts.

This is a mung bean dish prepared by a student in the class. This year’s gardening class is not only good at growing microgreens, but good at cooking as well.
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